Religious: people were critical of certain church abuses of practices

Politcal: Secular leaders pissed that clergy was butting in with state affairs

Economic: everyone hated church taxes (Peter's Pence-a yearly tax on all Christians), money was flowing out of the countries and into Rome. Rulers wanted Church lands throughout Europe

Intellectual: Renaissance thinking and Humanism encouraged people to question church's teachings. N. Humanists attack Church abuses